Resolution of external (3rd party) beans in weld

Question

I know it is still not quite popular, since the spec was released just a few months ago.

I haven't "installed" weld yet, I'm just reading, and by this question I want to make sure I've understood this important point correct:

Is resolution of beans that are in 3rd-party jars achieved by declaring them as <alternatives> in your beans.xml?

If not, how to use beans from 3rd party libraries that don't have beans.xml ?

Putting the jar on the classpath won't work unless there is beans.xml in their META-INF, which you can't make true for 3rd party jars. (see Gavin King's post on the subject)

Answer 1

why think so complicated?

Simply make a producerMethod for those 3rd party classes.

Let's assume you have a 3rd party library which automatically takes PDF files and sends them per faximile, and you like to use something like

private @Inject PdfFaxService faxService;

in your code, then you could simply provide this with a producer method. The PdfFaxService works stateless, so we can safely assume that we can make it @ApplicationScoped:

public @Produces @ApplicationScoped PdfFaxService createFaxService() {
  return new PdfFaxService(initparameters);
}

somewhere.

hth.